A new Covid-19 variant called NB.1.8.1, or Nimbus, represents about a third of new US Covid-19 cases. Dr. Leana Wen answers ...

Airport screening in the U.S. detected the new variant in travelers arriving in California, Washington state, Virginia and ...

What to know about the COVID variant, detected in airport screenings in Washington state, that may cause ‘razor blade’ sore throats.

Longtime Democratic strategist James Carville criticized Health and Human Services (HHS) Secretary Robert F. Kennedy Jr.’s ...

Everybody should know the stories of Micha and Natalie, the two German children who were infected with measles at the ...